Season 2Episode 2Discovery ChannelJanuary 14, 2018

Recent forensic findings uncover the astonishing secrets of the world's most iconic monument, the great Sphinx at Giza. Join the extraordinary investigation as it reveals which pharaoh commissioned this colossal statue and why it was never finished.

Giant pyramids at a strange site in Mexico are revealing the bloody secrets of a mysterious civilisation that vanished 1400 years ago. Little is known about this lost culture, but new discoveries are uncovering shocking evidence of human sacrifice.

A castle in Scotland could be the home of King Arthur's legendary Round Table. Scientists have made a gruesome discovery at this mysterious site: a disfigured skeleton that could reveal the castle's bloody secrets and rewrite the history books.